Diabetic Ketoacidosis (DKA) can develop quickly when insulin delivery is interrupted. Automated insulin delivery systems are powerful tools, but pump users face a unique risk because pumps use only rapid-acting insulin. If delivery stops, there is no background long-acting insulin on board. Ketones can rise within hours.
You can prevent most DKA events with a simple, repeatable plan. This guide shows you what to watch for, what to do in the first hour, and when to call your care team or go to the emergency room. No hype, no mystery. Just clear steps to keep you safe.
At Sol Endocrinology, we help you tailor these steps to your device, your body, and your day-to-day life. To troubleshoot urgent and emergent medical situations, Dr. Roe is available after hours when you feel sick or see persistent highs.
Know the early warning signs
DKA risk starts when insulin is too low for too long. Watch for:
- Glucose staying above 250 mg/dL for more than 2 to 3 hours despite corrections
- Nausea, vomiting, or stomach pain
- Fruity or acetone breath, new fatigue, or confusion
- Fast or deep breathing
- Extreme thirst and frequent urination
Any combination of these, especially with sustained high glucose, should trigger ketone testing and your sick-day plan.
Make your site and supplies rock solid
Infusion sets and sensors are small, but they do big work. Small issues lead to big highs.
- Change infusion sets every 2 to 3 days, sooner if you see redness, itching, pain, or adhesive lift.
- Rotate locations to avoid scar tissue and ensure absorption.
- Check tubing, cartridge, and connectors for air bubbles, leaks, or kinks before bed and before long drives or flights.
- Respond to pump alerts quickly. Treat occlusion and insulin delivery warnings as urgent until proven otherwise.
- Keep a backup kit with you: rapid-acting insulin pen or vial with syringes, long-acting insulin if prescribed for emergencies, ketone strips (blood preferred, urine acceptable), alcohol wipes, spare set, reservoir, tape, and batteries or charger.
Your first-hour plan for highs on a pump
If your CGM or meter shows glucose above 250 mg/dL, act now. Do not wait for the next automated adjustment to fix it.
- Check ketones. Use blood ketone testing if you have it. Urine ketone strips also work.
- Give a correction dose of insulin. Follow your plan. If you suspect pump or site failure, consider giving your correction by pen or syringe rather than through the pump tubing which may be blocked.
- Hydrate. Sip water or sugar-free fluids. Aim for a glass every 30 to 60 minutes unless your clinician has restricted fluids.
- Recheck in 1 to 2 hours. Follow your glucose trend and ketones. If still high or ketones are rising, change the infusion set and insulin cartridge. Choose a fresh site away from your current area.
- If highs persist after the set change or you have vomiting, give insulin by pen or syringe and contact your care team. Do not stack frequent pump boluses while a bad site is still in place.
Clear actions based on ketone level
Small or trace ketones
- Change the infusion set and cartridge right away.
- Give extra insulin per your sick-day plan. Many people need 10 to 20 percent more insulin over several hours, but follow your clinician’s guidance.
- Drink water regularly.
- Recheck glucose and ketones every 1 to 2 hours until both improve.
Moderate or large ketones
- Treat as an emergency.
- Change the infusion set and cartridge.
- Give insulin by pen or syringe, not through the pump, using your sick-day dosing plan.
- Call your clinician immediately or go to the emergency room if you cannot keep fluids down, are vomiting, feel drowsy or confused, or ketones do not fall within 2 to 4 hours.
- Keep sipping water or electrolyte fluids as tolerated.
High-risk times to stay extra alert
- Illness, especially fever, vomiting, or respiratory infections
- Major stress, travel disruptions, sleep loss, or skipped meals with active insulin
- High-fat or heavy meals that can cause delayed spikes
- Intense or prolonged activity that changes insulin needs during recovery
- Supply gaps or expired insulin
- Time-zone or daylight saving changes if device settings are not updated
Never skip basal insulin. If you disconnect for more than an hour, consider a temporary basal strategy per your plan or give a small manual dose as advised by your clinician.
Use your device features on purpose
Automated systems are designed to help, but your attention still matters.
- Review alert settings. Make sure high alerts are on and loud enough to wake you. Many people tighten alerts when sick.
- Confirm unexpected readings. If the CGM seems off, confirm with a fingerstick before making big changes.
- Treat occlusion or insulin delivery alerts urgently. Test for ketones when glucose is above 250 mg/dL, you feel sick, or you get repeated delivery warnings.
- After sensor or set changes, watch trends closely for 2 to 3 hours to confirm stable delivery.
If you need help setting alerts or building a sick-day plan, our team can walk you through your device settings and create a written checklist you can keep with your backup kit. Learn more about how we support diabetes technology and CGM at Sol Endocrinology.
When to call your team vs going to the ER
Call your endocrine team if:
- You have small ketones that are not clearing after a set change and extra insulin
- Glucose is still above 250 mg/dL 3 to 4 hours after corrections
- You are unsure about dosing or backup insulin use
Go to the ER or call emergency services if:
- You have moderate or large ketones, vomiting, severe stomach pain, or fast, deep breathing
- You feel very drowsy, confused, or cannot keep fluids down
- Ketones remain high and glucose will not fall despite insulin by pen or syringe
How Sol Endocrinology supports safe pump use
Our Dallas clinic keeps this simple. You get quick-start appointments to prevent supply gaps, help with device setup, and direct clinician messaging for members when you need fast answers. We partner with you to personalize basal rates, insulin-to-carb ratios, correction factors, and exercise plans, then translate that into a one-page sick-day plan you can trust.
If you are looking for a responsive, clinician-led partner for diabetes care in the Dallas area, explore our approach to Dallas endocrinology and learn how our team supports technology-enabled safety. You can also meet our Dallas endocrinologists and schedule a consultation to build or update your sick-day plan.
FAQ
At what point should you see an endocrinologist?
- Seek an endocrinology visit if you have diabetes with frequent highs or lows, are starting or troubleshooting a pump or CGM, have recurring ketones, or need a sick-day plan. Also schedule if you have unexplained weight change, fatigue, thyroid symptoms, or hormone concerns that persist. If you have moderate or large ketones or DKA symptoms, go to the ER first, then follow up with endocrinology.
What is the most common disease treated by an endocrinologist?
- Diabetes is the most commonly treated endocrine condition in outpatient practice. Endocrinologists also treat thyroid disease, osteoporosis, adrenal and pituitary disorders, PCOS, and metabolic conditions.
What is the most frequent physical symptom of endocrine disorders?
- Fatigue is one of the most frequently reported, non-specific symptoms across many endocrine conditions. It often appears with other clues like weight change, hair or skin changes, heat or cold intolerance, thirst, or changes in blood pressure or glucose.
Why does an endocrinologist look at your hands?
- Hands can show subtle endocrine signs. An endocrinologist may look for tremor, skin texture or pigmentation changes, nail changes, swelling, joint issues, or carpal tunnel signs that point toward thyroid, adrenal, pituitary, or metabolic conditions.
Key takeaways
- DKA prevention starts with fast action when glucose stays above 250 mg/dL.
- Test ketones any time you have sustained highs, feel sick, or get pump delivery alerts.
- For small ketones, change the set, give extra insulin per plan, hydrate, and recheck in 1 to 2 hours.
- For moderate or large ketones, treat as an emergency and give insulin by pen or syringe, not the pump.
- Keep a stocked backup kit and never skip basal insulin.
If you want a clear, personalized sick-day plan and device settings that match your life, schedule a consultation with Sol Endocrinology. We are here with real answers and rapid access so you can feel confident using your system every day.